274 results about "Diaphragm compressor" patented technology

The invention discloses a multifunctional integrated gas control system for a dilution refrigerator, and particularly relates to the field of refrigeration and low-temperature engineering, which comprises a liquid nitrogen cold trap, a gas buffer tank, an integrated valve box, a dilution refrigeration internal circulation pipeline, a diaphragm compressor, a roots pump, a turbo molecular pump and a vacuum suction pump set. According to the system, a highly-integrated valve box module is used and is responsible for implementing gas circuit control on different stages such as dilution refrigeration cycle starting, operation and shutdown rewarming; according to the invention, conductance optimization and heat loss reduction are carried out on gas paths with different temperature zones and different pressures, high air tightness of a full temperature zone from room temperature to extremely low temperature is ensured, the reliability and the automation degree of the dilution refrigerating machine are improved, and very positive significance is provided for practicability of a dilution refrigerating system.

The invention discloses a diaphragm compressor, which belongs to the technical field of diaphragm compressors, and is characterized in that a second piston is additionally arranged on a piston assembly on the basis of the structure of the existing diaphragm compressor, the second piston is arranged on a piston rod, and the second piston axially reciprocates in a middle body. When the second piston moves rightwards, gas in the first cavity begins to expand, meanwhile, the middles of the diaphragms are vacuumized to enable the three diaphragms to be attached, the volume of the gas cavity is increased, the air suction amount is increased, and therefore the problem that the volume efficiency of the diaphragm compressor is poor due to diaphragm separation is solved. The oil pool of the crankcase is vacuumized, bubbles contained in oil in the oil pool of the crankcase are removed, the elasticity modulus of hydraulic oil is improved, the influence of gas contained in the hydraulic oil on the actual volume efficiency of the high-pressure diaphragm compressor is avoided, and the volume efficiency of the diaphragm compressor is effectively improved.

The invention relates to the technical field of fatigue life testing, and particularly discloses a method for testing the fatigue life of a diaphragm of a diaphragm compressor, which comprises the following steps of: measuring the material tensile strength value of each diaphragm tensile sample piece through a tensile fatigue test, and simultaneously determining the fatigue life of the diaphragm of the diaphragm compressor by combining geometric parameters of each diaphragm tensile sample piece; the method comprises the following steps of: constructing association expressions between geometric parameters of a diaphragm tensile sample piece and tensile test results, and further performing global polymerization analysis on each group of constructed association expressions, so as to intelligently estimate the sigma b value of the diaphragm material of the diaphragm compressor. Therefore, the tensile property of the diaphragm material can be evaluated more accurately, so that a more reliable basis is provided for testing the fatigue life of the diaphragm.

The invention discloses a diaphragm compressor for gas production, and relates to the technical field of wind power hydrogen production. The diaphragm compressor for gas production comprises a base, a motor, a cylinder body and a cylinder cover which are arranged on a diaphragm compressor body, a piston and an oil distribution disc are arranged in the cylinder body, a diaphragm cavity air cylinder and a diaphragm are arranged in the cylinder cover, and an air suction pipe and an exhaust pipe are arranged at the end of the cylinder cover. The diaphragm compressor for gas production further comprises a water vapor removal mechanism arranged at an inlet of the gas suction pipe. According to the diaphragm compressor for gas production, water vapor in hydrogen can be conveniently condensed, removed, discharged and collected, meanwhile, hydrogen escape is avoided, the hydrogen compression quality is guaranteed, hydraulic oil in the cylinder body can be cooled, the use performance of the hydraulic oil is guaranteed, the reliability and performance of a system are guaranteed, and the service life of the system is prolonged. And the diaphragm and other sealing elements can be damaged by high temperature, so that the use effect and the service life are ensured.

The utility model discloses a double-cone oil cavity structure of a high-rotating-speed diaphragm compressor. The double-cone oil cavity structure comprises a cylinder cover and a supporting assembly. The cylinder cover is installed on the supporting assembly, a diaphragm and an oil distribution disc are arranged between the supporting assembly and the cylinder cover, a first oil cavity is formed between the supporting assembly and the bottom of the oil distribution disc, the oil distribution disc is provided with an oil outlet channel, the bottom of the oil distribution disc is provided with a first conical protruding part, a piston hole is formed in the supporting assembly, and a piston is arranged in the piston hole. The top of the piston is in a second cone shape, and the first cone shape and the second cone shape are oppositely arranged. The top of the piston is in the second cone shape, and the first cone-shaped protruding part is arranged at the bottom of the oil distribution disc, so that when the piston moves from a lower dead center to an upper dead center, hydraulic oil can be guided to flow in the first oil cavity in the radial direction, impact of the hydraulic oil on the oil distribution disc is reduced, flow loss of the hydraulic oil is reduced, and the service life of the hydraulic oil is prolonged. Therefore, the cavitation phenomenon is prevented.

The invention discloses a diaphragm compressor state monitoring method based on dynamic oil pressure and intake and exhaust pressure, and relates to the technical field of diaphragm compressors. The dynamic oil pressure of the compressor is monitored, the running state of the compressor is monitored according to the matching relation between the oil pressure and the air pressure, the fault is recognized in time, and even the fault is pre-judged, so that breakage of a diaphragm or overpressure in a cavity is avoided, and the loss caused by the fault of the compressor is reduced. The method comprises the following steps that S1, the set oil spill pressure of an overflow valve and the air inlet pressure and the exhaust pressure of a compressor are obtained; s2, according to the set oil spilling pressure, air inlet pressure and exhaust pressure, the oil pressure high reference and the oil pressure low reference of the running state of the diaphragm compressor are set; s3, measuring the running dynamic oil pressure of the compressor, and obtaining an oil pressure peak value and an oil pressure minimum value; and S4, the obtained oil pressure peak value and the obtained oil pressure minimum value are compared with the oil pressure high reference and the oil pressure low reference, and the running state of the compressor is judged according to the comparison result.

According to the diaphragm compressor oil mass self-balancing system and the control method, the needed oil supplementing amount and the working state of a diaphragm compressor are calculated and judged through measurement data of exhaust pressure, transient oil pressure and the oil supplementing amount, and data are measured through a pressure sensor and a flow meter and transmitted to a control unit; the required oil supplementing amount is calculated, the working state of the diaphragm compressor is judged, the opening degree of a proportional overflow valve on an oil supplementing loop is controlled, accurate automatic control over the hydraulic oil amount of an oil cavity of the diaphragm compressor and dynamic balance of the oil amount are achieved, and the problem that an executing mechanism acts too frequently can be solved through the oil supplementing method; the overflow valve realizes the change of the oil discharge pressure along with the exhaust pressure, and avoids the problem caused by higher oil pressure. The problem that the diaphragm flaps the cylinder due to the fact that the oil quantity of the oil cavity is reduced under the conditions of starting, working condition change, piston ring abrasion and the like can be effectively solved.

The utility model discloses an internal circulation test system of a diaphragm compressor, which relates to the technical field of diaphragm compressors and comprises a secondary exhaust buffer tank connected with an air outlet end of the diaphragm compressor and a primary air inlet buffer tank connected with the air outlet end of the diaphragm compressor. A gas inlet pipeline communicated with the first-stage gas inlet buffer tank is arranged at the gas outlet end of the second-stage gas exhaust buffer tank, a buffer bottle set and a buffer tank are arranged on the gas inlet pipeline, a valve I is arranged between the second-stage gas exhaust buffer tank and the buffer bottle set, and a gas exhaust pipeline is arranged at the outlet end of the buffer bottle set and the inlet end of the buffer tank in parallel. A valve II is arranged on the exhaust pipeline, and a valve III is arranged on the air inlet pipeline connected with the exhaust pipeline in parallel; the device is simple in structure and low in cost, can be recycled, does not affect the unit test environment, reduces the pressure of high-pressure gas generated at the exhaust end through the high-flow circulation test system by using the gas pressure generated by the working of the diaphragm compressor, and transmits the high-pressure gas to low-pressure gas required by the gas inlet end, and the gas and equipment can be repeatedly used.

The invention discloses a fatigue analysis method for a diaphragm compressor. The fatigue analysis method comprises the following steps: establishing a finite element model; setting material attributes; carrying out grid division; load and constraint setting; and fatigue solving. The invention relates to a fatigue analysis method of a diaphragm compressor. The method comprises the steps of finite element model establishment, material attribute setting, mesh generation and load and constraint setting. Fatigue solving is conducted, fatigue damage, the fatigue safety coefficient and the service life can be obtained through simulation calculation, evaluation of the fatigue service life of a cylinder cover, a cylinder body and other core components of the diaphragm compressor is achieved, the reliability in the actual using process is ensured, and the fatigue analysis method is easy and convenient to operate, high in result reliability and high in practicability.

The present invention provides a gas pressurization system, method, electronic device and readable storage medium for a hydrogen refueling station. The system includes a diaphragm compressor, a reflux pipeline, a buffer tank and a vent pipeline. The air inlet and air outlet of the diaphragm compressor are respectively connected to the air inlet pipeline and the exhaust pipeline, and a total exhaust pneumatic valve is provided on the exhaust pipeline; the two ends of the reflux pipeline are respectively connected to the exhaust pipeline and the air inlet pipeline, and a reflux pneumatic valve is provided on the reflux pipeline; the buffer tank is connected to the air inlet pipeline and the reflux pipeline through the first buffer pipeline and the second buffer pipeline, and a front tank air inlet pneumatic valve and a rear tank air inlet pneumatic valve are provided on the air inlet pipeline, a buffer tank pneumatic valve is provided on the first buffer pipeline, and a buffer tank air inlet pneumatic valve is provided on the second buffer pipeline; the air inlet pipeline, the exhaust pipeline, the buffer tank and the reflux pipeline are connected to the vent pipeline, and a vent pneumatic valve is provided on the vent pipeline. The present invention can stabilize the diaphragm head pressure of the diaphragm compressor and extend the service life of the diaphragm.

The invention relates to the technical field of monitoring control, and discloses a gas pressure real-time monitoring method and system of a diaphragm compressor. The method comprises the steps that diaphragm surface vibration signals are collected through a three-axis acceleration sensor, and vibration time domain data are obtained; a main frequency component, a power spectrum density value and a frequency band power spectrum integral value are extracted through fast Fourier transform, and vibration spectrum features are formed; according to the corresponding relation between the frequency and the pressure, the vibration characteristic parameters are subjected to weighted calculation, and a real-time gas pressure feedback value is obtained; the system sets upper and lower limits of pressure, a change rate and a fluctuation adjustment threshold value, automatically adjusts and controls the pressure, and outputs a corresponding adjustment instruction when the pressure exceeds any threshold value. The accuracy and reliability of gas pressure monitoring of the diaphragm compressor are improved.

The invention discloses a treatment process method for improving the strength and plasticity of a hydrogen isolation diaphragm and the hydrogen isolation diaphragm. The treatment process method comprises the following steps: S1, carrying out high-frequency vibration and static pressure coupling treatment on the hydrogen isolation diaphragm; and S2, the hydrogen isolation diaphragm is subjected to snakelike line rolling treatment. The hydrogen isolation diaphragm is treated by the treatment process method. According to the treatment process method, high-frequency vibration and static pressure coupling treatment is carried out on the hydrogen isolation diaphragm, and a gradient nanostructure and residual compressive stress are introduced into the surface layer of the hydrogen isolation diaphragm, so that the strength and plasticity of the hydrogen isolation diaphragm are remarkably improved, and the hydrogen embrittlement sensitivity is reduced; therefore, the service life of the hydrogen isolation diaphragm in the high-pressure hydrogen diaphragm compressor is prolonged, and the safety and reliability of equipment are improved.

Devices and methods for operating a diaphragm compressor. Embodiments of the present disclosure comprise an oil piston being driven to pressurize work oil against the diaphragm of the compressor. In embodiments, an injection pump provides a supplemental flow of work oil in the region of pressurized fluid, and such pump may be part of an actively controlled system. In embodiments, a pressure relief valve vents an overpump flow of work oil, and such valve may be variable. Embodiments provide feedback and control mechanisms, including control of the injection pump and the relief valve.

The invention discloses a partition leakage detection structure of a diaphragm compressor, and relates to the technical field of diaphragm compressors. The sealing effect between the diaphragm and the cylinder cover is enhanced, leakage of the gas side diaphragm, leakage of the oil side diaphragm and leakage of diaphragm breakage can be detected respectively, and false alarm of diaphragm breakage is avoided. The leakage detection structure comprises an embedded membrane head structure and a leakage detection structure. The embedded membrane head structure comprises a gas side membrane head, an oil side membrane head, an oil distribution disc and a membrane; the leakage detection structure comprises a gas leakage detection device, a hydraulic oil leakage detection device and a diaphragm rupture detection device; a gas leakage detection channel is formed in the gas side film head; a first hydraulic oil leakage detection channel is formed in the oil distribution disc; a second hydraulic oil leakage detection channel is formed in the oil side film head; a hydraulic oil leakage detection device is arranged at an outlet of the second hydraulic oil leakage detection channel; a diaphragm rupture detection opening is formed in the oil side diaphragm head; and a diaphragm rupture detection device is arranged at the diaphragm rupture detection port.

A diaphragm compressor upper diaphragm head structure and a design method thereof, the upper diaphragm head is formed by combining and splicing involute segment B1B2, straight line segment B2B3, involute segment B3B4, involute segment B4B5, straight line segment B5B6 and involute segment B6B7 to form a diaphragm compressor diaphragm cavity profile line; the diaphragm cavity profile line is rotated around the center axis of the upper diaphragm head to obtain a diaphragm cavity surface S2, i.e. a gas side diaphragm cavity surface on the lower side of the upper diaphragm head, which comprises a surface S21 formed by rotating involute segment B1B2 and involute segment B6B7, a surface S22 formed by rotating straight line segment B2B3 and straight line segment B5B6, and a surface S23 formed by involute segment B3B4 and involute segment B4B5; an inclination angle is arranged between an air inlet valve cavity plane S3 on the upper side of the upper diaphragm head and an exhaust valve cavity plane S4; the involute segment is obtained by substituting basic generating equation of the involute into respective characteristic parameter base circle radius and base circle characteristic angle. The diaphragm compressor clearance volume is reduced.

The present invention relates to a double-valve micro-discharge device for a diaphragm compressor, comprising a diaphragm compressor, wherein the diaphragm compressor is provided with a diaphragm head leakage interface, and the diaphragm compressor is also provided with an air disc leakage interface, wherein the air disc leakage interface is connected to an air disc pressure gauge, and the air disc leakage interface is also connected to a first metering valve, and the first metering valve is connected to a first discharge port through the first low-pressure check valve; the air disc leakage interface is also connected to an inlet of a second low-pressure check valve, and the outlet of the second low-pressure check valve is connected to a pressure transmitter, and the outlet of the second low-pressure check valve is also connected to a second metering valve, and the second metering valve is connected to the first discharge port through the first low-pressure check valve. The beneficial effects of the present invention are as follows: the air disc leakage interface and the air disc pressure gauge are provided, and the leakage of the air disc sealing ring can be effectively distinguished from the leakage of the diaphragm and the oil side sealing ring, thereby eliminating the false alarm caused by occasional micro-leakage of the air disc sealing ring and the impact of the shutdown on production, and significantly extending the maintenance cycle of the diaphragm head.

A diaphragm compressor with membrane cavity profile edge correction and a profile design method, the diaphragm compressor has a membrane cavity profile formed by combining a first membrane cavity profile and a second membrane cavity profile according to a segmented proportion, the first membrane cavity profile is a single exponential membrane cavity profile, and the second membrane cavity profile is used for edge stress correction; the maximum stress of the middle part of the membrane cavity profile is reduced by adjusting the design parameters of the first membrane cavity profile, and the maximum stress of the edge part of the membrane cavity profile is reduced by adjusting the design parameters of the second membrane cavity profile; the first membrane cavity profile and the second membrane cavity profile are continuous, monotonous and without sharp points, forming a combined edge correction diaphragm compressor membrane cavity profile. Under the premise of meeting the design requirements, the design parameters of the first membrane cavity profile and the second membrane cavity profile are adjusted through multi-objective parameter optimization calculation. The present application can overcome the problems of insufficient optimization parameters and limited optimization range of traditional single exponential profile design, and can optimize the reliability of the diaphragm compressor and increase the service life of the diaphragm.

The utility model discloses a diaphragm type compressor follow-up valve structure, which relates to the technical field of compressor follow-up valves, and comprises a follow-up valve main body, a valve cover and an oil inlet seat, and the top end of the outer wall of the follow-up valve main body is butted with the valve cover. When the follow-up valve structure of the diaphragm type compressor is used, the oil inlet seat is blocked by the blocking block through resetting of the spring, then the follow-up valve main body is closed, excessive oil in a cavity can be discharged without using a diaphragm, and the situation that parts need to be frequently replaced due to the fact that the diaphragm is easily damaged is avoided, so that the effect of facilitating stable work is achieved; according to the follow-up valve structure of the diaphragm compressor, limiting of the valve cover is canceled by moving the fixing plate, the interior of the follow-up valve body is maintained, the interior of the follow-up valve body can be maintained without disassembling the follow-up valve in a large range, time and energy are saved, and therefore the effect of facilitating internal maintenance is achieved when the follow-up valve structure of the diaphragm compressor is used.

The invention discloses a diaphragm compressor with a two-stage counter-moving plunger pump structure and a design method of the diaphragm compressor. The diaphragm compressor comprises a first-stage plunger pump and a second-stage plunger pump, and the first-stage plunger pump and the second-stage plunger pump are installed on the two symmetrical sides of a compressor end cover correspondingly; hydraulic oil sealing is carried out between plunger pump bodies of the first-stage plunger pump and the second-stage plunger pump and a compressor end cover, between the plunger pump bodies and plunger pump linings, between the plunger pump bodies and plunger pump covers and between the plunger pump linings and plunger pump plungers in the plunger pump linings. The first-stage plunger pump and the second-stage plunger pump are driven by the eccentric wheel structure, and under the combined action of the counter-acting force of the plunger pump springs and the friction force of the plunger pumps, the oil feeding process, the pressure increasing process, the oil discharging process and the pressure reducing process are achieved. According to the method, the diameter and the stroke of the plunger of the plunger pump can be determined, the minimum spring force needed by the spring of the plunger pump and the optimal mounting angle range of the two-stage plunger pump can be determined, and a design scheme, performance prediction and optimization directions are provided for prolonging the service life of the plunger pump, improving the reliability of the plunger pump and the like.

The utility model relates to a dangerous medium side double O-shaped ring sealing structure for a diaphragm compressor, which belongs to the technical field of diaphragm compressor cylinder cover structure design and comprises a new sealing groove and a new O-shaped ring, the new sealing groove is arranged on the lower end face of an air disc and positioned on one side of the sealing groove of the air disc, and the new O-shaped ring is positioned in the new sealing groove. The novel structure and the original structure are in the same plane, extra workload is not increased during installation, but after technical transformation, the sealing effect is greatly enhanced, meanwhile, a machine head leakage detection system can still operate normally, the service life of equipment is greatly prolonged, the reliability of long-period operation of the equipment is guaranteed, the overhaul frequency is reduced, and the production efficiency is improved. Manpower resources are greatly saved; and as core components of the diaphragm compressor, the diaphragm and the O-shaped ring have the characteristics of high pressure resistance, corrosion resistance and the like, the price is higher, and the diaphragm and the O-shaped ring need to be replaced in each maintenance, but the new structure can prolong the service life of equipment, which means that the consumption of spare parts is greatly reduced, and the economic benefit is relatively considerable.

This utility model discloses a diaphragm compressor with a base, including a compressor body. A pressure gauge is mounted on the top of the compressor body, a fixing block is welded to the top of the pressure gauge, a bushing is welded to the top of the fixing block, a first external threaded rod is sleeved inside the bushing, a fixing frame is welded to the surface of the first external threaded rod, and a cover plate is welded to one end of the fixing frame. This diaphragm compressor with a base, by mounting a pressure gauge on the top of the compressor body, welding a fixing block to the top of the pressure gauge, and simultaneously welding a bushing to the top of the fixing block, allows the first external threaded rod to be sleeved inside the bushing, and a fixing frame to be welded to the surface of the first external threaded rod, until the pressure gauge on the pressure gauge is exposed. Then, a control device transmits power from a power supply to a light strip, which illuminates the pressure gauge, making it easier and clearer to observe.

The invention relates to a control method of an air conditioning system, the air conditioning system comprises a compressor and a condenser which are in fluid connection, the compressor is a diaphragm compressor, and the compressor comprises a refrigerant inlet, a refrigerant outlet and a working chamber connected between the refrigerant inlet and the refrigerant outlet, the suction valve is arranged between the inlet and the working chamber and is an electric control one-way valve, the diaphragm piece is arranged between the working chamber and the power chamber, the flywheel provides driving force for the diaphragm piece, and the motor provides driving force for the flywheel. The control method comprises the steps that the pressure of the condenser is obtained in real time; and if it is determined that the pressure of the condenser is in the first pressure interval, the suction valve is controlled to be opened for an eighth duration every a seventh duration. According to the control method, the compressor of the air conditioning system can intermittently provide large short-time compression force for a long time, and sufficient compression of the refrigerant is facilitated.

The invention relates to a high pressure diaphragm compressor for pressurizing a gaseous fluid to a pressure of at least 10 MPa, the compressor including a compressor head having an oblong shaped chamber.

A method and product for generating the membrane cavity profile of a diaphragm compressor based on the brachistochrone curve are disclosed. The method includes establishing an XOY coordinate system; defining a first rolling circle S1 and a second rolling circle S2, centered above and below the X-axis and tangent to it; the two rolling circles moving along the X-axis with angular velocity ω while remaining tangent to the X-axis and moving in opposite directions; the trajectory ONQ of a feature point initially located at the origin O on each rolling circle, traversed by the first rolling circle S1, serves as the membrane cavity generation line, forming a cycloid OMK with the movement of the second rolling circle S2; defining the membrane cavity radius, membrane cavity deflection, and the ratio of the radii of the two generated rolling circles, establishing a series of membrane cavity profiles; and selecting the optimal profile from these profiles based on specific conditions to obtain a membrane cavity profile that meets the requirements. The membrane cavity profile generation method proposed in this invention is a multi-parameter profile control method with adjustable characteristic tilt angles and the ratio of the radii of the two generated rolling circles, offering greater design flexibility.

The utility model discloses an online detection device for a diaphragm compressor. The online detection device comprises a supporting mechanism, a longitudinal moving mechanism, a transverse moving mechanism, a telescopic mechanism, a detection ray generator assembly and a detection ray receiving plate assembly, the longitudinal moving mechanism is mounted on the supporting mechanism; the two ends of the transverse moving mechanism are located on the longitudinal moving mechanism respectively. The telescopic mechanism is suspended below the transverse moving mechanism, and the detection ray generator assembly and the detection ray receiving plate assembly are respectively mounted on the transverse moving mechanism. According to the utility model, not only can the running state and damage condition of the compressor and related parts be detected in real time, but also the positions of the detection ray generator assembly and the detection ray receiving plate assembly can be adjusted according to different types and sizes of diaphragm compressors and different parts of the diaphragm compressors, so that the application range is expanded; and the method is safe, efficient and high in practicability.

The present invention discloses a flow stabilizing device for a diaphragm compressor, which belongs to the technical field of flow stabilizing devices for filling pipelines of diaphragm compressors. The air inlet of the diaphragm compressor body is connected to an air inlet pipe, and a buffer assembly is provided at the air inlet pipe. The buffer assembly includes an inflatable airbag and a buffer gas tank. The two ends of the air inlet pipe are connected to the air inlet of the diaphragm compressor body and the buffer gas tank. The inflatable airbag is sleeved on the surface of the air inlet pipe, and the two ends of the inflatable airbag contact the surface of the air inlet and the buffer gas tank after being inflated. The present invention utilizes the deformation of the inflatable airbag to buffer the vibration of the air inlet pipe, and the inflatable airbag wraps the air inlet pipe in all directions, which can prevent the external temperature from affecting the gas inside the air inlet pipe, reduce the air pressure inside the air inlet pipe affected by temperature changes as much as possible, reduce the amplitude of the air inlet pipe affected by external factors, and achieve stable delivery of pressurized gas.

The invention provides a novel diaphragm head assembly for a diaphragm compressor, and relates to the technical field of diaphragm compressors. The novel diaphragm head assembly for the diaphragm compressor comprises a connecting clamping seat, a transmission inner seat is fixedly connected to one side of the connecting clamping seat, a connecting flange is fixedly connected to the end, away from the connecting clamping seat, of the transmission inner seat, and a first connecting seat is welded to the end, away from the transmission inner seat, of the connecting flange; the inner wall of the first connecting base is slidably connected with a pushing terminal, one end of the pushing terminal is connected with an internal sliding terminal, and the outer wall of the internal sliding terminal is sleeved with a plurality of sealing rings. The diaphragm head assembly for the diaphragm compressor has the advantages that the sealing performance of the diaphragm head assembly can be effectively improved, leakage of gas and oil liquid is reduced, heat in the assembly can be quickly dissipated, the problems that due to high temperature, a diaphragm piece is aged, and abrasion of parts is aggravated are solved, and the purity of compressed gas is improved.

The utility model belongs to the technical field of metal material fatigue tests, and particularly relates to a testing device for diaphragm compressor research and development, which comprises a support and a testing assembly, the support is a rectangular frame-shaped support, clamping assemblies are arranged in the middle of the inner side of a left frame and the middle of the inner side of a right frame of the support, and the testing assembly comprises a hydraulic cylinder and a testing mold. The fixed end of the hydraulic cylinder is connected with the inner side of an upper side frame of the support, the telescopic end of the hydraulic cylinder is connected with the upper side of the test mold, the test mold comprises an upper mold, a lower mold and a connecting plate, and the connecting plate is fixedly connected with the rear sides of the upper mold and the lower mold. And a periodic load test is carried out, and the stress state of the compressor in actual service is simulated to the greatest extent, so that the data of the symmetric bending fatigue test of the metal diaphragm is true and credible.

The utility model provides a high-efficiency diaphragm compressor, and belongs to the technical field of diaphragm compressors. The high-efficiency diaphragm compressor comprises a driving structure and a ventilation structure fixed to one side of the driving structure, the driving structure comprises a bottom frame and a suction part, the suction part is fixed to the top of the bottom frame, the ventilation structure comprises an air outlet part and an air inlet part, the air outlet part is fixed to one side of the suction part, and the air inlet part comprises an air inlet frame. The air inlet frame is fixed to one side of the suction part, an air inlet ring is fixed in the air inlet frame, a second guide rod is slidably connected to the interior of the air inlet ring, a second limiting piece is fixed to the end of the second guide rod, and a second blocking plate is slidably connected to one side of the second guide rod. According to the utility model, through double air inlet and air outlet of the air inlet piece and the air outlet piece, the air can be compressed at any time when the diaphragm moves back and forth, so that the compression efficiency of the compressor is improved.

The invention relates to the technical field of electronic data processing, and discloses a detection data processing method and system for a helium leak detector for a diaphragm compressor, and the method comprises the steps: obtaining an original helium concentration time sequence signal and a periodic frequency parameter of the stroke of the diaphragm compressor; constructing a notch filter bank, and filtering the original helium concentration time sequence signal to obtain a preliminary signal; performing wavelet transform decomposition on the initial signal, performing threshold processing on a wavelet coefficient, and then performing reconstruction to obtain a de-noised signal; iterative fitting is carried out on the de-noised signal, a dynamic background baseline is estimated, and a background correction signal is obtained; calculating a first-order time derivative sequence, a local information entropy sequence and morphological correlation; and when the amplitude of the first-order time derivative sequence is continuously higher than a first threshold value, the local information entropy sequence is lower than a second threshold value, and the morphological correlation degree is higher than a third threshold value, judging that leakage occurs. According to the invention, multi-dimensional and high-confidence identification can be carried out on the leakage event, and the detection sensitivity, the anti-interference capability and the reliability of tiny leakage are improved.